1600400803 has 2 divisors, whose sum is σ = 1600400804. Its totient is φ = 1600400802.

The previous prime is 1600400801. The next prime is 1600400833. The reversal of 1600400803 is 3080040061.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1600400803 - 2¹ = 1600400801 is a prime.

It is a super-2 number, since 2×1600400803² = 5122565460486089618, which contains 22 as substring.

Together with 1600400801, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1600400801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800200401 + 800200402.

It is an arithmetic number, because the mean of its divisors is an integer number (800200402).

Almost surely, 2^1600400803 is an apocalyptic number.

1600400803 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600400803 is an equidigital number, since it uses as much as digits as its factorization.

1600400803 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 1600400803 is about 40005.0097237833. The cubic root of 1600400803 is about 1169.7047500548.

Adding to 1600400803 its reverse (3080040061), we get a palindrome (4680440864).

The spelling of 1600400803 in words is "one billion, six hundred million, four hundred thousand, eight hundred three".